Year	Number
1996	34.7826080322266
1998	29.3478260040283
2000	30.4347820281982
2002	38.9189186096191
2003	51.8918914794922
2004	51.243782043457
2005	50.4901962280273
2006	46.0784301757813
2007	41.262134552002
2008	44.6601943969727
2009	51.1961708068848
2010	53.5885162353516
2011	50.7108993530273
2012	47.3933639526367
2013	49.7630348205566
2014	42.3076934814453
2015	41.4285697937012
2016	38.0952377319336
2017	37.1428565979004
2018	34.761905670166
2019	32.3809509277344
2020	23.8095245361328
2021	18.0952377319336
2022	13.6792449951172